(2x-1)(x+2)=3

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Solution for (2x-1)(x+2)=3 equation: 


Simplifying
(2x + -1)(x + 2) = 3

Reorder the terms:
(-1 + 2x)(x + 2) = 3

Reorder the terms:
(-1 + 2x)(2 + x) = 3

Multiply (-1 + 2x) * (2 + x)
(-1(2 + x) + 2x * (2 + x)) = 3
((2 * -1 + x * -1) + 2x * (2 + x)) = 3
((-2 + -1x) + 2x * (2 + x)) = 3
(-2 + -1x + (2 * 2x + x * 2x)) = 3
(-2 + -1x + (4x + 2x2)) = 3

Combine like terms: -1x + 4x = 3x
(-2 + 3x + 2x2) = 3

Solving
-2 + 3x + 2x2 = 3

Solving for variable 'x'.

Reorder the terms:
-2 + -3 + 3x + 2x2 = 3 + -3

Combine like terms: -2 + -3 = -5
-5 + 3x + 2x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-5 + 3x + 2x2 = 0

Factor a trinomial.
(-5 + -2x)(1 + -1x) = 0


Subproblem 1
Set the factor '(-5 + -2x)' equal to zero and attempt to solve:

Simplifying
-5 + -2x = 0

Solving
-5 + -2x = 0

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + -2x = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -2x = 0 + 5
-2x = 0 + 5

Combine like terms: 0 + 5 = 5
-2x = 5

Divide each side by '-2'.
x = -2.5

Simplifying
x = -2.5

Subproblem 2
Set the factor '(1 + -1x)' equal to zero and attempt to solve:

Simplifying
1 + -1x = 0

Solving
1 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + -1x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1x = 0 + -1
-1x = 0 + -1

Combine like terms: 0 + -1 = -1
-1x = -1

Divide each side by '-1'.
x = 1

Simplifying
x = 1
Solution
x = {-2.5, 1}

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